<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
</head>
<body>

<div id="app">
<!--  <h2 v-bind:style="{key(属性名):value(属性值)}">{{message}}</h2>-->
  <h2 v-bind:style="getStyle()">{{message}}</h2>
</div>
  <script src="../js/vue.js"></script>
<script>
  const app = new Vue({
    el:'#app',
    data:{
      message:"message",
      finalSize: 100,
      finalColor:'red'


    },
    methods:{

      getStyle:function (){

        return {fontSize:this.finalSize+'px',color:this.finalColor};

      }

    }

  })
</script>

</body>
</html>